Randomly found that my hostname changed to ipv6-a6260100000000000000000000000000 on a machine I never set the hostname on. I eventually found out that it was performing reverse DNS on it's IP address which returned the following result: ipv6-a6260100000000000000000000000000.conexonconnect.com This seems to be the same for all the IP addresses in my deligated prefixes. Just weird that they set all their reverse DNS to the same hostname.